Comment on "Design of a broadband highly dispersive pure silica photonic crystal fiber" by Subbaraman et al

TL;DR

This paper critiques a previous study on highly dispersive silica photonic crystal fibers, emphasizing the importance of considering beating length for accurate dispersion analysis.

Contribution

It highlights the oversight of beating length in the original work, providing a more comprehensive perspective on fiber dispersion characteristics.

Findings

Beating length significantly affects dispersion analysis.

Neglecting beating length leads to incomplete understanding.

Correcting this oversight alters dispersion estimates.

Abstract

In a recent paper, Subbaraman et al report a theoretical and numerical study of highly dispersive pure silica photonic crystal fiber supporting group-velocity dispersion exceeding -2*10^4 ps/nm/km. This comment argues that the authors only consider one out of the two sides of the same coin, by not taking the corresponding beating length into account.